题目

We all know that money can't buy happiness, but many times we act as if we were happier with a bit more money. We are conditioned to want to be rich (when we know the rich aren't happy either) ; we are trained to want the latest gadget (a small tool) or style that television tells us to want; we want to earn more money because then we'll have a good life. But none of them will bring us happiness. No matter how much we earn, no matter how much we have in the bank, no matter how nice our clothing or cars or toys, none of them will make us happier. And the sad thing is that it could take u下列各组性质比较中，正确的是 ①酸性：HClO4>HBrO4>HIO4     ②碱性：Ba(OH)2>Mg(OH)2>Be(OH)2 ③氧化性：F>Si>O        ④稳定性 ：HCl>H2S>SiH4 A、①②③     B、②③④     C、①②④     D、①③④